{firefox,chromium}: restore QR code extensions as they are never around when needed

I was missing it at school yesterday and while it was trivial to install, it could have been in my Firefox already

etc/firefox/policies/policies.json

@@ -153,6 +153,10 @@
         "install_url": "https://addons.mozilla.org/firefox/downloads/latest/privacy-badger17/latest.xpi",
         "installation_mode": "force_installed"
       },
+      "offline-qr-code@rugk.github.io": {
+        "install_url": "https://addons.mozilla.org/firefox/downloads/latest/offline-qr-code-generator/latest.xpi",
+        "installation_mode": "force_installed"
+      },
       "plasma-browser-integration@kde.org": {
         "install_url": "https://addons.mozilla.org/firefox/downloads/latest/plasma-integration/latest.xpi",
         "installation_mode": "force_installed"

etc/opt/chromium/policies/managed/README.md

@@ -12,6 +12,7 @@
 - [`aminda-extensions.json`](#aminda-extensionsjson)
   - [3rdparty](#3rdparty)
   - [Silk - Privacy Pass Client for the browser](#silk---privacy-pass-client-for-the-browser)
+  - [QR Code](#qr-code)
   - [Plasma Integration](#plasma-integration)
   - [uBlock Origin](#ublock-origin)
   - [LocalCDN](#localcdn)
@@ -106,6 +107,10 @@ To intentionally trigger it and what should be allowed in NoScript:
 - https://captcha.website
 - https://issuance.privacypass.cloudflare.com
 
+### [QR Code](https://chromewebstore.google.com/detail/qr-code/cbimgpnbgalffiohilfglgkkhpegpjlo)
+
+- `cbimgpnbgalffiohilfglgkkhpegpjlo`
+
 ### [Plasma Integration](https://chrome.google.com/webstore/detail/cimiefiiaegbelhefglklhhakcgmhkai)
 
 - `cimiefiiaegbelhefglklhhakcgmhkai`

etc/opt/chromium/policies/managed/aminda-extensions.json

@@ -96,6 +96,12 @@
       "toolbar_pin": "default_unpinned",
       "update_url": "https://clients2.google.com/service/update2/crx"
     },
+    "cbimgpnbgalffiohilfglgkkhpegpjlo": {
+      "installation_mode": "normal_installed",
+      "override_update_url": true,
+      "toolbar_pin": "force_pinned",
+      "update_url": "https://clients2.google.com/service/update2/crx"
+    },
     "cimiefiiaegbelhefglklhhakcgmhkai": {
       "installation_mode": "force_installed",
       "override_update_url": true,